I approached this peak from Loon Mountain. When you pull into the resort, there are two lodges. You want to take a left and go to the lodge that is further to the east. Park in the lot there and walk behind the lodge. Keep walking east and you will get to some condos with an outdoor pool. The condos make an 'L' shape. Past the condos, there is a gravel road. Follow that uphill for a bit and you will then come to a ski trail on your left. This is the Brookway Trail. Follow that to the top and keep bearing left onto the Lower Walking Boss Trail and then the Upper Walking Boss Trail. The views off these ski trails are magnificent. At the top of Upper Walking Boss is the herd path. There are two yellow signs as you're going up (on your left just below the ski quad). There used to be a cairn but I did not see one, however the herd path is obvious. You enter the woods and follow the herd path for approximately 0.6 miles.
Most GPS maps and even the map on this website have a dotted line that follows the ridge. This is not a trail - I assume it is either some sort of forest boundary or perhaps a divide between two watersheds. The herd path sort of follows this except it's parallel to it and slightly north of it. Eventually you have to begin whacking south by southeast off the herd path. My best advice is to follow the dotted line on the map for this part. You dip down immediately and there is a bog. Go around the bog but continue up the ridge. You will notice on the map that the dotted line makes a sharp turn east towards Scar Ridge summit. You cannot follow that turn as there is significant blowdown at that point. Instead, as you're hiking south and approaching that, when you get to the 3400' mark, begin hiking southeast to avoid the blowdown. Pick up the ridge again around 3600' and you should have passed most of the blowdown and then keep hiking east along the ridge to the summit.
The canister and summit sign are located slightly east of the 'x' marking the summit on any maps I have seen. There was more blowdown near the summit but miraculously, the tree with the canister was still standing.